Find the area $ A $ of a cylinder if radius $r = 4.8$ and height $h = 15$.

$A = 190.08$

STEP 1: find base area $ AB $

To find base area $ AB $ use formula:

$$ AB = r^2 \cdot \pi $$

After substituting $ r = 4.8 $ we have:

$$ AB = 4.8^2 \cdot \pi $$ $$ AB = 23.04 \cdot \pi $$

STEP 2: find lateral area $ AL $

To find lateral area $ AL $ use formula:

$$ AL = 2 \cdot r \cdot h \cdot \pi $$

After substituting $ r = 4.8 $ and $ h = 15 $ we have:

$$ AL = 9.6 \cdot 15 \cdot \pi $$$$ AL = 144\pi $$

STEP 3: find area $ A $

To find area $ A $ use formula:

$$ A = 2 AB + AL $$

After substituting $ AB = 23.04\pi $ and $ AL = 144\pi $ we have:

$$ A = 2 \cdot 23.04\pi + 144\pi $$ $$ A = 46.08 + 144 $$ $$ A = 190.08 $$

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